Merge pull request #80 from xenoamess-fork/add_contains_license

add license black list & white list detect function in LicenseCompareHelper

Author: goneall

src/main/java/org/spdx/utility/compare/LicenseCompareHelper.java

@@ -782,4 +782,89 @@ public static String[] matchingStandardLicenseIds(String licenseText) throws Inv
 		}
 		return matchingIds.toArray(new String[matchingIds.size()]);
 	}
+
+	private static <T> boolean contains(
+			T[] array,
+			T value
+	) {
+		for (T t : array) {
+			if (Objects.equals(t, value)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Detect if a license pass black lists
+	 * @param license license
+	 * @param blackList license black list
+	 * @return if the license pass black lists
+	 * @throws InvalidSPDXAnalysisException
+	 */
+	public static boolean isLicensePassBlackList(
+			AnyLicenseInfo license,
+			String... blackList
+	) throws InvalidSPDXAnalysisException {
+		if (license == null) {
+			return true;
+		}
+		if (blackList == null || blackList.length == 0) {
+			return true;
+		}
+		if (license instanceof ConjunctiveLicenseSet) {
+			for (AnyLicenseInfo member : ((ConjunctiveLicenseSet) license).getMembers()) {
+				if (!isLicensePassBlackList(member, blackList)) {
+					return false;
+				}
+			}
+			return true;
+		} else if (license instanceof DisjunctiveLicenseSet) {
+			for (AnyLicenseInfo member : ((DisjunctiveLicenseSet) license).getMembers()) {
+				if (isLicensePassBlackList(member, blackList)) {
+					return true;
+				}
+			}
+			return false;
+		} else {
+			return !contains(blackList, license.toString());
+		}
+	}
+
+	/**
+	 * Detect if a license pass white lists
+	 * @param license license
+	 * @param whiteList license white list
+	 * @return if the license pass white lists
+	 * @throws InvalidSPDXAnalysisException
+	 */
+	public static boolean isLicensePassWhiteList(
+			AnyLicenseInfo license,
+			String... whiteList
+	) throws InvalidSPDXAnalysisException {
+		if (license == null) {
+			return false;
+		}
+		if (whiteList == null || whiteList.length == 0) {
+			return false;
+		}
+		if (license instanceof ConjunctiveLicenseSet) {
+			for (AnyLicenseInfo member : ((ConjunctiveLicenseSet) license).getMembers()) {
+				if (!isLicensePassWhiteList(member, whiteList)) {
+					return false;
+				}
+			}
+			return true;
+		} else if (license instanceof DisjunctiveLicenseSet) {
+			for (AnyLicenseInfo member : ((DisjunctiveLicenseSet) license).getMembers()) {
+				if (isLicensePassWhiteList(member, whiteList)) {
+					return true;
+				}
+			}
+			return false;
+		} else {
+			return contains(whiteList, license.toString());
+		}
+	}
+
 }